Sensitive Cu~(2+)-Cu~(2+) Distance Measurements in a Protein-DNA Complex by Double-Quantum Coherence ESR

Sharon Ruthstein; Ming Ji; Preeti Mehta

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Sensitive Cu~(2+)-Cu~(2+) Distance Measurements in a Protein-DNA Complex by Double-Quantum Coherence ESR

机译：利用双量子相干ESR对蛋白质-DNA复合物中的敏感Cu〜（2 +）-Cu〜（2+）距离进行测量

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Double quantum coherence (DQC) ESR spectroscopy is applied to measure the Cu~(2+)-Cu~(2+) distance in the EcoRI-DNA complex. A simple method is proposed to reduce the contribution of nuclear hyperfine and quadrupole interactions to such data. The effects of such interactions between the electron spin of Cu~(2+) and neighboring nuclei on the DQC data make it difficult to measure the nanometer range interspin distance. The DQC data is in good agreement with results obtained by double electron electron resonance (DEER) spectroscopy. At the same time, the signal-to-noise ratio per shot in DQC is high. Taken together, these results provide impetus for further development of paramagnetic metal ion-based DQC techniques.

机译：利用双量子相干（DQC）ESR光谱技术测量了EcoRI-DNA复合物中Cu〜（2 +）-Cu〜（2+）的距离。提出了一种简单的方法来减少核超细和四极相互作用对此类数据的贡献。 Cu〜（2+）电子自旋与邻近原子核之间的这种相互作用对DQC数据的影响使得难以测量纳米范围的自旋距离。 DQC数据与通过双电子电子共振（DEER）光谱获得的结果非常吻合。同时，DQC中每次发射的信噪比很高。综上所述，这些结果为进一步发展基于顺磁性金属离子的DQC技术提供了动力。

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《The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical》 |2013年第20期|共4页
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Sharon Ruthstein; Ming Ji; Preeti Mehta;
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1. Spectroelectrochemical　Studies　on　the　Interactions　of　Complexes　of　Cu（phen）₂2+　and　Cu（bpy）₂2+　with　DNA [J] . 高等学校化学研究：英文版 . 1997,第002期
2. Sensitive Cu~(2+)-Cu~(2+) Distance Measurements in a Protein-DNA Complex by Double-Quantum Coherence ESR [J] . Sharon Ruthstein, Ming Ji, Preeti Mehta The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical . 2013,第20期

机译：利用双量子相干ESR对蛋白质-DNA复合物中的敏感Cu〜（2 +）-Cu〜（2+）距离进行测量
3. A highly selective and sensitive fluorescent sensor for Cu~(2+) and its complex for successive sensing of cyanide via Cu~(2+) displacement approach [J] . Lijun Tang, Mingjun Cai Sensors and Actuators . 2012,第期

机译：用于Cu〜（2+）及其配合物的高选择性和高灵敏度的荧光传感器，用于通过Cu〜（2+）置换方法连续检测氰化物
4. An Approach towards the Measurement of Nanometer Range Distances Based on Cu~(2+) Ions and ESR [J] . Zhongyu Yang, Drew Kise, Sunil Saxena The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical . 2010,第18期

机译：基于Cu〜（2+）离子和ESR的纳米距离测量方法
5. PSEUDOPOLAROGRAPHIC DETERMINATION OF Cd~(2+), Pb~(2+) AND Cu~(2+) COMPLEXES FOUND IN SEWAGE TREATMENT PLANT (STP) EFFLUENT [C] . Tim F. Rozan, Ian P. Clark American Chemical Society Division of Environmental Chemistry Symposium . 2008

机译：在污水处理厂（STP）流出物中发现的CD〜（2+），PB〜（2+）和Cu〜（2+）复合物的假橄榄球运动测定
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机译：Pb（2+）和Cu（2+）在水悬浮液中的原始氧化物和改性氧化物上的吸附和反应。
7. Sensitive Cu2+-Cu2+ Distance Measurements in a Protein-DNA Complex by Double-Quantum Coherence ESR [O] . Sharon Ruthstein, Ming Ji, Preeti Mehta, -1

机译：双量子相干ESR在蛋白质-DNA复合物中的灵敏Cu2 + -Cu2 +距离测量
8. Physical measurements of Cu{sup 2+}-complexes of bilirubin [O] . Ferraro, J.R., Wu, J.G., Li, W.H., 1995

机译：Cu {sup 2 +}的物理测量 - 胆红素复合物
9. Physical measurements of Cu(sup 2+)-complexes of bilirubin [R] . Ferraro, J. R., Wu, J. G., Li, W. H., 1995

机译：Cu（sup 2 +） - 胆红素复合物的物理测量

Sensitive Cu~(2+)-Cu~(2+) Distance Measurements in a Protein-DNA Complex by Double-Quantum Coherence ESR

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